ENGINE PERFORMANCE – Lexus LS 400 1999 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.0L

4.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus LS 400 1999

List of elements for 4.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus LS 400 1999:

• (dash harn, lower right end of dash)
• (eng harn, left side of eng)
• (eng harn, left side of engine)
• (eng harn, rear of engine)
• (engine harn, left side of engine)
• (engine harn, rear of engine)
• (rear side of left cyl head)
• (rear side of right cyl head)
• (rear side of right cyl head) g117
• A braided
• Acis
• Braided
• Camshaft position sensor (left front of engine)
• Cl-
• Conn e13
• Conn e14
• Crankshaft position sensor (left front of engine)
• E01
• E02
• E03
• E10
• E10 (engine harness, rear of engine)
• E11
• E12
• E13
• E14
• E15
• E16
• E2g
• Engine control module (right side of dash)
• Evg
• G112
• G112 (rear side of left cyl head)
• G117
• Ge01
• Htl
• Htr
• Igf1
• Igf2
• Ignition coil & igniter 1
• Ignition coil & igniter 2
• Ignition coil & igniter 3
• Ignition coil & igniter 4
• Ignition coil & igniter 5
• Ignition coil & igniter 6
• Ignition coil & igniter 7
• Ignition coil & igniter 8
• Igt1
• Igt2
• Igt3
• Igt4
• Igt5
• Igt6
• Igt7
• Igt8
• Injector 1
• Injector 2
• Injector 3
• Injector 4
• Injector 5
• Injector 6
• Injector 7
• Injector 8
• J/c 10 (right side of dash)
• Knkl
• Knkr
• Knock sensor 1 (left center of engine)
• Knock sensor 2 (left center of engine)
• Left camshaft timing oil control valve (top left front of eng)
• Left vvt sensor (left side of engine)
• Mass airflow meter (in air intake duct)
• Me01
• Ne+
• Ne-
• Noise filter (top left rear of engine)
• Ocv+
• Ocv-
• Oxl1
• Oxr1
• Pnk
• Prg
• Red
• Right vvt sensor (right side of engine)
• Tha
• Throttle control motor & clutch (left front of eng)
• Thw
• Vpa
• Vpa2
• Vsv (acis) (top right side of engine)
• Vsv (evap) (top left rear of engine)
• Vta
• Vta2
• Vvl+
• Vvl-
• Vvr+
• Vvr-

4.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus LS 400 1999

List of elements for 4.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus LS 400 1999:

• (dash harn, right kick panel)
• (engine harn, e16
• A19
• Acc
• Accel position sensor (top front of engine)
• Am2
• Braided
• C12
• Cir opn relay
• Driver side junction block
• E14
• E14 (engine harn, rear of engine)
• E16
• Efi 1 fuse 20a
• Efi 2 fuse 10a
• Efi relay
• Engine coolant temperature sensor (top right front of engine)
• Engine room junction block
• Fuel pump (in fuel tank)
• Fuel pump relay
• Fuel pump resistor (left front corner of engine compt)
• G100 (front of left front fender)
• G112 (rear side of left cyl head)
• G407 (right side of back panel)
• Heated oxygen sensor (bank 1 sensor 1) (on left side of engine, in exhaust manifold)
• Heated oxygen sensor (bank 2 sensor 1) (on right side of engine, in exhaust manifold)
• Hot at all times
• Ht1
• Ig2
• Ign fuse 10a
• Ignition switch
• Instrument panel junction block
• J/c 10 (right side of dash)
• L10
• L11
• Left side of engine)
• Lock
• Oxl1
• Oxr1
• P/n
• Park/neutral position switch (on transmission)
• Pnk
• Red
• St2
• Start
• Starter fuse 7.5a
• Starting/ charging system
• Throttle position sensor (on throttle body)

4.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus LS 400 1999

List of elements for 4.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus LS 400 1999:

• (behind center of dash) a/c control assembly
• (behind left side of dash)
• (dash harn, upper right side of dash)
• (engine harn, left side of engine)
• (left side of dash)
• (rear side of left cyl head)
• (right instrument panel brace)
• (under center console) transmission control switch
• (w/o navigation)
• A/t indicator light switch (integral to park/neutral position switch) (on transmission)
• A20
• B11
• B18
• B22
• Body ecu (behind left side of dash)
• C20
• Center junction block
• Combination meter
• Cpu
• D10
• D17
• Driver side junction block
• E16
• Ect pwr
• Ect snow
• Electronically controlled transmission pattern select switch
• Engine oil level warning switch oil level (right front side of eng)
• G112
• G202
• G206
• Gauge fuse 10a
• Heated oxygen sensor (bank 1 sensor 2) (on exhaust system, near catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (on exhaust system, near catalytic converter)
• Hot at all times engine room junction block
• Hot in on or start
• Htl2
• Htr2
• I43
• I44
• Instrument panel junction block
• J/c 10 (right side of dash)
• J/c 3 (right kick panel)
• Mpx+
• Mpx-
• Mpx1
• Mpx2
• Mt4
• Mtl
• Multi- display (w/navigation)
• Nssd
• Nssl
• Obd fuse 7.5a
• Oil temp
• Oxl2
• Oxr2
• Ptnk
• Pwr
• Red
• Snow
• Stop-s fuse 7.5a
• Vapor pressure sensor (left front corner of engine compt)
• Vcc

4.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus LS 400 1999

List of elements for 4.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus LS 400 1999:

• (dash harn, left side of dash)
• (dash harn, right kick panel)
• (lower left side of dash) data link connector 3
• (on transmission) o/d direct clutch speed sensor
• (rear side of left cyl head)
• (right instrument panel brace)
• (top left side of engine) data link connector 1
• +b1
• +bm
• A39
• A40
• Abs & trac & vsc ecu (right side of dash)
• Acmg
• Air conditioning system
• B12
• Bat
• Batt
• Ccs
• Center junction block
• Cl+
• Code
• Conn e11
• Conn e12
• Conn e15
• Conn e16
• Cruise control system
• E18
• Electronic suspension system
• Electronically controlled transmission solenoid (in transmission)
• Eng+
• Eng-
• Engine control module (behind right side of dash)
• Engine room junction block
• Eom
• Etcs fuse 15a
• Fpr
• G112
• G112 (rear side of left cyl head)
• G202 (behind left side of dash)
• G206
• Generator
• Grd
• Hot at all times
• Htr2
• I13
• I38
• Igsw
• Imld
• Instrument panel junction block
• J/c 10 (right side of dash)
• J/c 18 (right side of dash)
• J/c 4 (left side of dash)
• J/c 5 (left side of dash)
• Ksw
• Lcki
• Mol
• Mpx1
• Mpx2
• Mrel
• Nco+
• Nco-
• Neo
• Ocr+
• Ocr-
• Oil
• Ox1b
• Oxl2
• Oxr2
• Pnk
• Pre
• Ptnk
• Pwr
• Red
• Right camshaft timing oil control valve (top right front of eng)
• Rspd
• Rxck
• Security indicator
• Shift lock ecu
• Sil
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Snwi
• Sp2+
• Sp2-
• Sta
• Sti-
• Stp
• Tach
• Tachometer
• Tam
• Tpc
• Transponder key amplifier (left center of dash)
• Trc+
• Trc-
• Txct
• Unlock warning switch (behind left side of dash)
• Vehicle speed sensor (on transmission)
• Vsv (vapor pressure sensor) (left front corner of engine compt)